TY - JOUR
T1 - Bifurcation theory of poloidal rotation in tokamaks
T2 - A model for L-H transition
AU - Shaing, K. C.
AU - Crume, E. C.
PY - 1989/1/1
Y1 - 1989/1/1
N2 - It is shown that the poloidal momentum balance equation in tokamaks has bifurcated solutions. The poloidal flow velocity Up can suddenly become more positive when the ion collisionality decreases. The corresponding radial electric field Er becomes more negative and hence suppresses the turbulent fluctuations. Thus, plasma confinement is improved. The theory is employed to explain the L-H transition observed in tokamaks.
AB - It is shown that the poloidal momentum balance equation in tokamaks has bifurcated solutions. The poloidal flow velocity Up can suddenly become more positive when the ion collisionality decreases. The corresponding radial electric field Er becomes more negative and hence suppresses the turbulent fluctuations. Thus, plasma confinement is improved. The theory is employed to explain the L-H transition observed in tokamaks.
UR - http://www.scopus.com/inward/record.url?scp=0001725855&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001725855&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.63.2369
DO - 10.1103/PhysRevLett.63.2369
M3 - Article
AN - SCOPUS:0001725855
VL - 63
SP - 2369
EP - 2372
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 21
ER -